<ion-select [value]="data1" [multiple]="multiple1" [(ngModel)]="data1" style="width : 60%" cancelText="关闭" okText="确认">
  <ion-select-option *ngFor="let count of data" [value]="count">{{count.name}}</ion-select-option>
</ion-select>
<ion-select *ngIf="type >1" [multiple]="multiple2" [value]="data2" [(ngModel)]="data2" style="width : 60%"
  cancelText="关闭" okText="确认">
  <ion-select-option *ngFor="let count of data1.children" [value]="count">{{count.name}}</ion-select-option>
</ion-select>
<ion-select *ngIf="type >2" [multiple]="multiple3" [value]="data3" [(ngModel)]="data3" style="width : 60%"
  cancelText="关闭" okText="确认">
  <ion-select-option *ngFor="let count of data2.children" [value]="count">{{count.name}}</ion-select-option>
</ion-select>